# -*- coding: utf-8 -*-
"""
Generate baseline proxy minion grains for Dell FX2 chassis.
The challenge is that most of Salt isn't bootstrapped yet,
so we need to repeat a bunch of things that would normally happen
in proxy/fx2.py--just enough to get data from the chassis to include
in grains.
"""
from __future__ import absolute_import, print_function, unicode_literals

import logging

import salt.modules.cmdmod
import salt.modules.dracr
import salt.proxy.fx2
import salt.utils.platform

__proxyenabled__ = ["fx2"]

__virtualname__ = "fx2"

logger = logging.getLogger(__file__)


GRAINS_CACHE = {}


def __virtual__():
    if (
        salt.utils.platform.is_proxy()
        and "proxy" in __opts__
        and __opts__["proxy"].get("proxytype") == "fx2"
    ):
        return __virtualname__
    return False


def _find_credentials():
    """
    Cycle through all the possible credentials and return the first one that
    works
    """
    usernames = []
    usernames.append(__pillar__["proxy"].get("admin_username", "root"))
    if "fallback_admin_username" in __pillar__.get("proxy"):
        usernames.append(__pillar__["proxy"].get("fallback_admin_username"))

    for user in usernames:
        for pwd in __pillar__["proxy"]["passwords"]:
            r = salt.modules.dracr.get_chassis_name(
                host=__pillar__["proxy"]["host"],
                admin_username=user,
                admin_password=pwd,
            )
            # Retcode will be present if the chassis_name call failed
            try:
                if r.get("retcode", None) is None:
                    __opts__["proxy"]["admin_username"] = user
                    __opts__["proxy"]["admin_password"] = pwd
                    return (user, pwd)
            except AttributeError:
                # Then the above was a string, and we can return the username
                # and password
                __opts__["proxy"]["admin_username"] = user
                __opts__["proxy"]["admin_password"] = pwd
                return (user, pwd)

    logger.debug(
        "grains fx2.find_credentials found no valid credentials, using Dell default"
    )
    return ("root", "calvin")


def _grains():
    """
    Get the grains from the proxied device
    """
    (username, password) = _find_credentials()
    r = salt.modules.dracr.system_info(
        host=__pillar__["proxy"]["host"],
        admin_username=username,
        admin_password=password,
    )

    if r.get("retcode", 0) == 0:
        GRAINS_CACHE = r
    else:
        GRAINS_CACHE = {}

    GRAINS_CACHE.update(
        salt.modules.dracr.inventory(
            host=__pillar__["proxy"]["host"],
            admin_username=username,
            admin_password=password,
        )
    )

    return GRAINS_CACHE


def fx2():
    return _grains()


def kernel():
    return {"kernel": "proxy"}


def location():
    if not GRAINS_CACHE:
        GRAINS_CACHE.update(_grains())

    try:
        return {
            "location": GRAINS_CACHE.get("Chassis Information").get("Chassis Location")
        }
    except AttributeError:
        return {"location": "Unknown"}


def os_family():
    return {"os_family": "proxy"}


def os_data():
    return {"os_data": "Unknown"}
